Running monitor to check API availability

[automationtester2496 (John)]

I have a basic test in my collection to check if the API returns a “Status code is 200”. When I run this via the collection it passes. But when I run it via the monitor it fails with the following error. Any thoughts?

pm.test("Status code is 200", function () {
    pm.response.to.have.status(200);
});